According to the data from Tianyan Check, Huawei Technologies Co., Ltd. has added several new patent information, one of which is the storage method and device of the blockchain ledger. The application date is January 17, 2019, and the application announcement date is July 24, 2020. The summary of basic patent information shows that this application provides a method and device for storing a blockchain ledger. The blockchain ledger includes a header block and at least one data block. It can be adapted to use multiple distributed nodes to jointly store a copy of the blockchain ledger, etc.